Hi, I was wondering why the IndexToString <https://github.com/apache/spark/blob/master/mllib/src/main/scala/org/apache/spark/ml/feature/StringIndexer.scala#L245> label transformer was not documented in ml-features.md <https://github.com/apache/spark/blob/master/docs/ml-features.md>.
If it's not intentional, having used it a few times, I'd be happy to submit a jira and the pr associated. Best, Ben. -- Ben Fradet.
